讲座主题：An approximate factorization method for inverse acoustic scattering with phaseless total-field data

专家姓名：张海文

工作单位：中科院数学与系统科学研究院

讲座时间：2021年10月26日 14:00-15:00

讲座地点：腾讯会议：757375919

主办单位：bob体育在线app数学与信息科学学院

内容摘要：

This talk is concerned with the inverse acoustic scattering problem with phaseless total-field data at a fixed frequency. An approximate factorization method is developed to numerically reconstruct both the location and shape of the unknown scatterer from the phaseless total-field data generated by incident plane waves at a fixed frequency and measured on the circle with a sufficiently large radius. The theoretical analysis of our method is based on the theory of oscillatory integrals. To the best of our knowledge, this is the first attempt to develop a factorization type method for inverse scattering problems with phaseless data.

主讲人介绍：

张海文，中国科学院数学与系统科学研究院副研究员。研究方向为声波与电磁波反散射问题。2018年获全国反问题年会青年学术奖。2019年入选中国科学院数学与系统科学研究院“陈景润未来之星”计划。2021年入选中国科学院“青年创新促进会”会员。在SIAM J. Appl. Math.、SIAM J. Imaging Sci.、SIAM J. Sci. Comput.、Inverse Problems、J. Comput. Phys.等学术期刊上发表论文20余篇。